Natural Resources
Conservation Service

Western Alaska Maritime Scrubland Gravelly Drainage, Escarpment

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Ecosystem states

State 1

Reference State

10901

Circle-spoke model

Ecosystem states

State 1

10901

Scenario model

Ecosystem states

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State 1
Reference State
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No transition or restoration pathway between the selected states has been described

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10901

State 1
Reference State

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Reference State

The escarpments typically support dense stands of alder.

Canopy cover and frequency of plant species in community 1.1.

Community 1.2 is in areas that have been subject to erosion (background).

Description

The reference state supports two community phases that are distinguished by the developed structure and dominance of the vegetation and the ecological function and stability of the community (fig. 5). The reference community phase is scrubland that has shade-tolerant forbs and graminoids in the understory.

This report provides baseline vegetation inventory data. Future data collection is needed to provide further information about existing plant communities and the disturbance regime that results in transitions from one community to another. Common and scientific names are from the USDA PLANTS database. All community phases are characterized by the Alaska Vegetation Classification System (Viereck et al., 1992).

Submodel

1.1. Alder-red elderberry/spreading woodfern-western oakfern/bluejoint (Alnus spp.-Sambucus racemosa/Dryopteris expansa-Gymnocarpium dryopteris-Calamagrostis canadensis)

1.2. Alder (Alnus spp.)/forb

Model keys

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Natural Resources
Conservation Service

Western Alaska Maritime Scrubland Gravelly Drainage, Escarpment

List model

Circle-spoke model

Scenario model

Current ecosystem state

Management practices/drivers

Target ecosystem state

State 1
Reference State

Description

Submodel

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Briefcase

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Major Land Resource Areas

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Natural ResourcesConservation Service

Western Alaska Maritime Scrubland Gravelly Drainage, Escarpment

Model keys

Natural Resources
Conservation Service